Study of Material Dispersion in Amorphous Silica Optical Fibers

Xie, Hui; Wang, Zhi‐Cheng; Fang, Junxin

doi:10.1002/pssa.2210960214

Cited by 5 publications

(2 citation statements)

References 13 publications

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“…Unfortunately, silica fibers generally possess anomalous dispersion from 1.3 to 2.4 m owing to the presence of a strong mid-IR absorption resonance [9]. However, we illustrate that normal fiber dispersion can be obtained over the entire silica transparency window through proper choice of fiber cutoff wavelength ͑ c ͒ and NA.…”

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confidence: 86%

Efficient mid-IR spectral generation via spontaneous fifth-order cascaded-Raman amplification in silica fibers

2008

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Spontaneous cascaded Raman amplification is demonstrated as a practical and efficient means of power transfer from telecommunications wavelengths to mid-IR wavelength bands through use of conventional silica fibers and amplifiers. We show that silica fibers possessing normal dispersion over all near-IR and mid-IR wavelengths can facilitate 37% and 16% efficient Raman power conversion from 1.53 microm to 2.15 and 2.41 microm wavelength bands, respectively, using nanosecond pulses from an all-fiber laser source. In contrast to supercontinuum-based techniques for long-wavelength generation, the high levels of Raman gain generated at these wavelength bands could produce useful optical amplification necessary for the development of numerous mid-IR laser sources.

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